SU1326787A1 - Hydraulic drive - Google Patents

Abstract

Invention m. B. used in mechanisms with several interacting working bodies. The purpose of the invention is to provide the required transient dynamics. The working cavity 9 of the hilromotor (GM) 3 is combined with the power source 6 through the speed regulator 10 and the distributor (R) 11. The drain cavity 12 G.M 3 communicates with the drain through parallel-installed adjustable throttle 13 and the pressure valve 14, and to the hydraulic cylinder ( Hz) 1 — via a non-return valve 16. Limit switches 17, 18, and 19 interact with stem 2 Hz 1 and are electrically connected to R 8 and 11. At a signal from limit switch 18, R 8 communicates cavity 9 of the GM 3 to source 6, while its cavity 12 is connected through valve 16 to HZ 1, and thus carries out consistent work of HC and GM. 1 il. 77 78 13 V S / o; to and os

Description

one

The invention relates to mechanical engineering and can be used in hydroficated machines and mechanisms with several interacting, their working bodies.

The purpose of the invention is to provide the required transient dynamics.

The drawing schematically shows the hydraulic drive.

The hydraulic actuator contains actuating hydraulic cylinder 1 with rod 2 and hydraulic motor 3, cavities 4 and 5 of hydraulic cylinder 1 are connected with power supply 6 and drain 7) without the main reversing three-position four-line distributor 8, the working cavity 9 of the hydraulic motor 3 through speed regulator 10 and an additional three-line distributor 1 1 is connected to the power source 6, the drain cavity 12 of the motor 3 is connected to the drain 7 via parallel-installed adjustable throttle 3 and pressure valve 14, 15 of the connection of the drain cavity 12 of the motor 3 The cavity 4 of the hydraulic cylinder 1 is fitted with a check valve 16, the limit switches 17-19 interact with the rod 2 of the hydraulic cylinder 1 and are electrically connected with the controls of the distributors.

Hydraulic drive works as follows.

Switching the distributor 8 to the right (according to the drawing) position is provided by the fast approach mode uiTOKa 2, after interacting with which the limit switch 18, the distributor 8 switches to the neutral position, and the distributor 11 to the left (according to the drawing) position, connecting the hydraulic motor 3 to the power source 6 . The working fluid from the hydraulic motor 3 is fed through the check valve 16 into the cavity 4 of the hydraulic cylinder 1, and the hydraulic motor 3 and the hydraulic cylinder 1 work together. After the completion of the working stroke

1326787

 STOCK 2 valve 1 i switches to its original position, and valve 8 to the left (according to the drawing) position for reversing the hydraulic cylinder 1.

Claims (1)

Invention Formula Hydraulic actuator containing actuating hydraulic cylinder with rod and hydraulic motor, main three-position four-line reversing distributor, pressure valve, throttle, non-return valve, additional distributor, drain motor cavity connected to the drain through the throttle and one of the hydraulic cylinder cavities, one of the hydraulic cylinder cavities 5 is connected to a power source and a drain through the main distributor, and the working cavity of the hydraulic motor is connected to a power source through an additional distributor, characterized in that Q ensure the required transient dynamics, the hydraulic actuator is equipped with a speed controller and limit switches, the pressure valve is installed parallel to the throttle, made adjustable, in the communication line of the hydraulic motor drain line 5, one of the cavities of the hydraulic cylinder is equipped with a check valve with an outlet to the hydraulic cylinder, an additional distributor is made of a two-position three-line valve, in which the first line is connected to the power source, the second is connected to the drain, the three-way speed controller is connected to the hydraulic cylinder. and a drain through the main distributor, in the neutral position of which its two lines are interconnected, connect the cylinder of the hydraulic cylinder with the drain, the limit switches are installed interoperable with the hydraulic cylinder rod along the path of its movement and electrically connected with the controls of the distributors.